Visual Deficits Objective Review 1 Neuroanatomy 2 Visual
Visual Deficits
Objective Review: 1. Neuroanatomy 2. Visual pathways Introduce: 1. Visual deficits 2. Diseases of the eye
Rods and Cones> optic nerve> optic chiasm> optic tract> thalamus > superior colliculi > thalamus> occipital lobe
Dorsal (spatial vision) pathway V 2 Primary Visual Cortex V 1 Ventral (object recognition) pathway V 4 Visual Cortex
Visual Deficits
Definitions • Hemianopia- loss of vision in half a vision field • Homonymous- same half on both eyes • Heteronymous- different halves on each eye • Ptosis- droopy eyelid • Saccade- quick eye movement • Astigmatism- malformed cornea or lens
Strabismus Inward turning = esotropia Outward turning = exotropia Upward turning = hypertropia Downward turning =hypotropia.
Nystagmus
Diseases of the Eye
Glaucoma
Retinal Neuropathy
Macular Degeneration
Cataracts
Retinitis Pigmentosa
Evaluation & Treatment
Visual Screening • Ocular Motility Testing: https: //videos. simucase. com/video/6012710777001 • Visual acuity (distance): Snellen Chart • Visual acuity (near): Read different sizes • Functional Vision: Observe ADL
Treatment Resources • https: //www. aota. org/Practice/Productive-Aging/Evidencebased/EBP-Low-Vision. aspx
References American Optometric Association https: //www. aoa. org/patients-and-public/eye-and-vision-problems
- Slides: 20